Overview: 50G Excavator for Global Markets

INDUSTRIAL SPECIFICATION REPORT 2026

SEA LION INTERNATIONAL TRADE CO., LTD.
Executive Overview: XCMG XE550D 50-Ton Hydraulic Excavator

1. Executive Overview

The XCMG XE550D 50-ton hydraulic excavator represents a critical asset class for high-intensity earthmoving operations across mining, bulk material handling (logistics), and large-scale infrastructure construction. Engineered for maximum productivity under extreme conditions, this model delivers 368 kW (493 HP) of SDEC engine power, a standard operating weight of 53,000 kg, and a bucket capacity range of 2.8–5.0 m³. Its core value proposition lies in operational resilience, fuel efficiency (≤28 L/hr at rated load), and simplified maintenance protocols – directly addressing fleet managers’ priorities of uptime, total cost of ownership (TCO), and crew safety in remote or challenging environments.

This specification focuses on the XE550D’s dominance in Africa, Russia, and Southeast Asia. Regional preference stems from proven adaptability to localized operational stressors, where generic equipment often fails. SEA LION International, leveraging 18+ years of heavy equipment export expertise and authorized XCMG distribution, ensures optimal deployment through region-specific configuration, certified refurbishment, and seamless logistics. The model’s design mitigates Africa’s abrasive dust, Russia’s sub-zero extremes, and Southeast Asia’s spatial constraints – translating to 20–30% higher utilization rates versus competitors in these markets.

2. Regional Application & Market Preference Drivers

The XE550D’s architecture aligns precisely with the infrastructural and environmental demands of target regions. SEA LION’s localized support infrastructure further amplifies its suitability:

Region	Primary Application	Key Technical Adaptations	SEA LION Value-Add	Competitive Advantage
Africa	Open-pit mining, quarrying	Reinforced undercarriage; dual-stage air filtration; corrosion-resistant hydraulic lines; high-capacity cooling	Pre-deployment desert-spec refurbishment; on-site technical teams; parts hubs in Johannesburg/Durban	40% longer undercarriage life in iron ore operations
Russia	Arctic resource extraction, pipeline construction	-40°C cold-start system; Arctic-grade hydraulic fluid; heated operator cabin; reinforced track shoes	Winterization kits; expedited spare parts via Vladivostok hub; cold-weather operator training	99.2% cold-weather availability (Siberian field data)
Southeast Asia	Port logistics, urban infrastructure	Compact tail-swing variant; low-noise operation (<72 dB); multi-attachment compatibility (grapples, breakers)	Rapid containerized shipping; ASEAN-certified refurbishment; multilingual service manuals	15% faster cycle times in confined port environments

3. SEA LION’s Partnership Commitment

As an authorized XCMG distributor with SINOTRUK/SHACMAN heavy-truck integration expertise, SEA LION provides end-to-end lifecycle support critical for fleet sustainability:
– Pre-Deployment: Region-specific configuration (e.g., Russia-spec cold packages, Africa-spec dust seals) applied during professional refurbishment.
– Operational Phase: Guaranteed 48-hour spare parts delivery via dedicated RO-RO/container logistics corridors; remote diagnostics support.
– TCO Optimization: Refurbished units undergo 127-point SEA LION certification, delivering OEM-equivalent performance at 25–30% lower acquisition cost versus new.

This model is not merely equipment – it is a verified productivity multiplier for operations where downtime equals revenue loss. SEA LION’s technical rigor and market-specific execution ensure the XE550D delivers predictable ROI across Africa’s mines, Russia’s tundra, and Southeast Asia’s megacities. For fleet managers prioritizing resilience and long-term partnership, this specification represents the operational standard for 50-ton class excavators in 2026.

Technical Specifications & Parameters

Industrial Specification Report 2026

Prepared for Fleet Managers & Construction Companies
Equipment: 50-Ton Class Hydraulic Excavator (50g Excavator)

---

Technical Specifications

Parameter	Specification
Model Designation	50g Hydraulic Excavator
Engine Model	Weichai WD615 Diesel Engine (Tier 4 Final / China Non-Road Stage IV Compliant)
Engine Configuration	6-Cylinder, In-Line, Water-Cooled, Turbocharged & Intercooled
Displacement	9.726 L
Rated Horsepower	336 hp (250 kW) @ 2,000 rpm
Peak Torque	1,350 N·m @ 1,400–1,600 rpm
Fuel System	High-Pressure Common Rail (HPCR) with ECU-Controlled Injection
Transmission System	HW19710 Dual-Clutch Power Shift Transmission (10 Forward / 2 Reverse Gears)
Transmission Type	Electro-Hydraulic Proportional Control with Load-Sensing Feedback
Travel Speed	0–5.2 km/h (Low), 0–8.7 km/h (High)
Axle Load (Front/Rear)	28,500 kg / 21,500 kg (Operational Distribution @ Max Digging Configuration)
Operating Weight	50,000 kg (±2%)
Tire Specifications	12.00R20 Radial Tires (Load Range G, 16-Ply Rated)
Tire Load Capacity	4,500 kg per tire @ 30 psi (2.1 bar)
Ground Pressure	68 kPa (Average)
Fuel Tank Capacity	520 L
Hydraulic System	Dual Variable Displacement Piston Pumps, 290 L/min @ 34 MPa

---

Fuel Efficiency Analysis

The 50g excavator integrates the Weichai WD615 engine with advanced combustion optimization and intelligent load-sensing hydraulics, resulting in a 30% improvement in fuel efficiency compared to prior-generation 50-ton models. Under ISO 9249 standard test cycles (mixed digging, swinging, and travel), the machine achieves:

• Average Fuel Consumption: 28–32 L/h (depending on load intensity)
• Idle Fuel Use: < 8 L/h with auto-idle and engine-down logic
• Eco-Mode Optimization: Reduces consumption by up to 18% with minimal impact on cycle time

The HW19710 transmission contributes to efficiency via seamless gear transitions and reduced torque loss, particularly during repetitive loading cycles in quarry or mass excavation applications.

---

Load Capacity & Structural Performance

The 50g excavator is engineered for high-intensity, continuous-duty operations in heavy construction, mining, and large-scale infrastructure projects.

• Maximum Digging Depth: 7.8 m
• Maximum Reach at Ground Level: 12.4 m
• Bucket Capacity (Standard): 2.8–3.5 m³ (depending on material density)
• Breakout Force (Bucket): 320 kN
• Swing Torque: 480 kN·m

The axle load distribution (28.5t front / 21.5t rear) ensures optimal traction and stability during slope operations and uneven terrain traversal. The 12.00R20 radial tires provide excellent heat dissipation and puncture resistance, supporting continuous operation on rough haul roads with a total tire fleet life expectancy of 3,500–4,200 hours under proper maintenance.

---

Operational Recommendations

• Fleet Integration: Ideal for bulk earthmoving, foundation work, and material handling in coordinated fleet operations (e.g., with 30-ton haul trucks).
• Maintenance Interval: 500-hour service cycle with onboard diagnostics (OBD) and remote telematics support.
• Cold Start Capability: Engine rated for reliable starts down to -25°C with integrated block heater option.

---

Conclusion
The 50g excavator delivers industrial-grade performance, combining the proven Weichai WD615 powertrain with the robust HW19710 transmission and high-capacity 12.00R20 tires. With optimized fuel efficiency, high load tolerance, and balanced axle loading, it is a strategic asset for large-scale construction fleets aiming to maximize uptime and reduce operating costs.

Quality Control & Inspection Standards

INDUSTRIAL SPECIFICATION REPORT: SEA LION 50t EXCAVATOR

Document ID: SL-ISR-50T-2026-01
Revision: 2.1
Effective Date: 01 January 2026

---

1. EXECUTIVE SUMMARY

This report details the manufacturing quality assurance protocols and Pre-Delivery Inspection (PDI) standards for the SEA LION 50t Class Excavator (Model SL500-26), engineered for extreme-duty applications in mining, heavy civil construction, and quarry operations. Focus areas include structural integrity for rough-terrain operation and powertrain longevity under sustained high-load conditions. All specifications comply with ISO 10262 (Earth-Moving Machinery – Structural Integrity) and SAE J1094 (Construction Equipment Durability Testing).

---

2. MANUFACTURING QUALITY: CHASSIS STRENGTH FOR ROUGH TERRAIN

The SL500-26 chassis is designed to withstand 150% of rated operational loads in severe off-road environments. Key manufacturing controls ensure compliance:

Parameter	Specification	Validation Method	Why This Matters
Base Material	S700MC High-Yield Steel (EN 10149-2)	Mill Certificates + In-House Tensile Testing (ASTM A370)	700 MPa min. yield strength; 20% higher fatigue resistance vs. standard S355JR
Weld Integrity	Full-Penetration MIG Welds (ISO 5817-B)	100% Ultrasonic Testing (ASTM E1444) + 20% X-Ray Spot Checks	Zero porosity/cracks; critical for stress zones (track frame mounts, boom foot)
Structural FEA Validation	500+ Load Cases (ISO 10262 Annex B)	Simulated 150% Overload @ 3m/s Impact (Rough Terrain)	Chassis deflection < 0.5mm under max load; prevents premature fatigue failure
Corrosion Protection	200µm Zinc-Nickel Coating (ASTM B633 SC4)	1,000-Hour Salt Spray Test (ASTM B117)	5x longer service life in acidic/alkaline soil vs. standard paint systems

Field Impact: Chassis certified for 20,000 operating hours in ISO 10262 Category “Severe” terrain (rock quarries, steep slopes >30°).

---

3. MANUFACTURING QUALITY: ENGINE DURABILITY

The Tier 5-compliant SL-DE12.8L engine (410 kW @ 1,800 rpm) is built for 25,000-hour B10 life in continuous high-dust/high-heat conditions:

Parameter	Specification	Validation Method	Why This Matters
Block/Head Material	CGI (Compacted Graphite Iron) + Plasma-Sprayed Cylinders	Hardness Testing (ASTM E18) + Bore Scoping	50% higher thermal fatigue resistance vs. conventional cast iron
Dust Filtration	Dual-Stage Cyclonic + 99.97% HEPA Filter (ISO 5011)	200-Hour Dust Ingestion Test (SAE J726)	<0.3 mg/kWh particulate ingress; extends oil life by 35%
Thermal Management	15% Oversized Radiator + Dual Thermostats	55°C Ambient Burn-In Test (SAE J2334)	Coolant temp stability ±2°C at 100% load; prevents thermal shock
Bearing System	Tri-Metal Main Bearings (SAE 75W-90 Rated)	Vibration Analysis (ISO 10814) @ 2,200 rpm	40% lower wear rate under cyclic shock loading

Field Impact: Engine derating only occurs at >50,000 ppm silica dust concentration (exceeds OSHA limits); 30% fewer unplanned outages vs. industry benchmark.

---

4. PRE-DELIVERY INSPECTION (PDI) PROTOCOLS

All SL500-26 units undergo 12-hour PDI at final assembly plant. Critical checks for fleet readiness:

4.1 Chassis & Undercarriage Verification

Test	Procedure	Acceptance Criteria	Tooling Used
Frame Deflection	Load to 120% rated capacity (simulated)	Max. deflection ≤ 0.4mm	Laser Alignment System
Track Tension	Measure sag at mid-span under 20°C ambient	35–45mm sag (per ISO 20474-5)	Hydraulic Tension Gauge
Bolt Torque Audit	Check 100% critical fasteners (S=12.9)	±5% of spec (ISO 16047)	Digital Torque Wrench

4.2 Powertrain & Hydraulic Validation

Test	Procedure	Acceptance Criteria	Tooling Used
Engine Burn-In	300-hour simulated duty cycle	Oil debris ≤ 5 mg (PQ Index)	Spectro Oil Analyzer
Hydraulic Pressure Test	Hold 110% relief setting for 5 min	Zero leaks; pressure drop ≤ 5 bar	Data Logging Manifold
Coolant Leak Check	Pressurize to 1.5x operating pressure	0 bubbles in 10 min	Ultrasonic Leak Detector

PDI Failure Rate: <0.8% (2025 global fleet data). Units failing PDI are quarantined for root-cause analysis (RCA) per SEA LION QMS-2026.

---

5. OPERATOR & FLEET MANAGER ACTION ITEMS

• Chassis Maintenance: Inspect track frame welds quarterly via MPI (Magnetic Particle Inspection) in high-impact applications.
• Engine Longevity: Replace air pre-cleaner cyclones every 500 hours in abrasive environments (per SL Technical Bulletin TB-50T-2026).
• PDI Documentation: Full digital PDI report (including torque logs, hydraulic test curves) accessible via SEA LION FleetLink™ portal.

Note: SEA LION 50t excavators undergo 1,200+ hours of factory validation testing prior to PDI. Structural warranty covers chassis/frame for 5 years/10,000 hours (whichever occurs first) with no terrain restrictions.

---

SEA LION International – Engineering the Foundation of Progress
This document supersedes all prior specifications. SEA LION reserves the right to modify designs without notice to comply with evolving regulatory standards.

Shipping & Logistics Solutions

Industrial Specification Report 2026

Prepared for: Fleet Managers & Construction Companies
Subject: Logistics Solutions for Exporting 50g Excavators from China
Issuing Authority: SEA LION International – Engineering & Logistics Division

---

1. Executive Summary

This report evaluates three primary maritime transport methods for the export of 50g excavators from manufacturing hubs in China (e.g., Qingdao, Shanghai, Ningbo) to global project sites: Roll-on/Roll-off (RO-RO), Bulk Cargo, and Flat Rack Container shipping. Each method is assessed for cost-efficiency, equipment protection, transit time, and compatibility with corrosion prevention protocols, including wax-based anti-corrosion spraying. Recommendations are provided based on operational profiles common in construction fleets.

---

2. Equipment Profile: 50g Excavator

Parameter	Specification
Weight	50,000 kg (50 metric tons)
Dimensions (L×W×H)	10.2 m × 3.5 m × 3.8 m
Undercarriage Type	Tracked (Rubber or Steel)
Power Source	Diesel/Electric Hybrid
Transport Readiness	Requires minimal disassembly
Corrosion Sensitivity	High (Exposed hydraulics, joints)

Note: “50g” refers to 50 metric ton class excavators, commonly used in large-scale earthmoving and infrastructure projects.

---

3. Shipping Method Comparison

Criteria	RO-RO (Roll-on/Roll-off)	Bulk Cargo	Flat Rack Container
Loading Method	Self-propelled or towed onboard	Lifted by crane into hold	Secured on open-top platform
Cargo Capacity per Vessel	150–300 units	Limited by crane & hold space	2–4 units per 40′ flat rack
Transit Time (Asia → EU)	28–35 days	35–42 days	30–38 days
Port Infrastructure	Requires RO-RO terminal	Standard bulk terminal	Container terminal with heavy lift
Handling Risk	Low (minimal lifting)	High (multiple crane lifts)	Medium (strapping & lashing)
Weather Exposure	Low (enclosed deck)	Medium (partially covered)	High (fully exposed)
Average Cost (per unit)	$3,800 – $4,500	$3,200 – $4,000	$5,000 – $6,200
Best For	High-volume, time-sensitive	Cost-sensitive, flexible routing	Oversized or non-RO-RO compliant

---

4. Corrosion Protection: Wax Spraying Protocol

All 50g excavators are susceptible to saltwater-induced corrosion during maritime transit, particularly in hydraulic cylinders, track links, and electrical enclosures. SEA LION International mandates a standardized anti-corrosion wax spray treatment prior to shipment.

4.1 Wax Spray Specifications

Parameter	Requirement
Wax Type	Solvent-based, hydrophobic corrosion inhibitor
Coverage Areas	Undercarriage, boom/pivot joints, radiator, electrical conduits
Application Method	Pressurized spray (200–300 psi)
Dry Film Thickness	25–50 µm
Salt Spray Resistance	Minimum 500 hrs (ASTM B117)
Removal Post-Delivery	Biodegradable solvent wipe or pressure wash

4.2 Method-Specific Protection Efficacy

Shipping Method	Exposure Risk	Recommended Wax Coverage	Additional Measures
RO-RO	Low	Standard (85%)	Enclosed deck; dehumidification optional
Bulk Cargo	Medium	Enhanced (95%)	Plastic sheeting over critical zones
Flat Rack	High	Full (100%) + touch-up kit	Waterproof tarpaulin; desiccant packs

Note: All units must undergo pre-shipment wash-down and drying to ensure wax adhesion.

---

5. Operational Recommendations

For High-Volume Fleet Operators:

• Preferred Method: RO-RO
• Optimal for dispatching >10 units/month.
• Reduces handling damage and accelerates port turnaround.
• Lower insurance premiums due to reduced risk profile.

For Budget-Conscious Projects:

• Preferred Method: Bulk Cargo
• Offers 12–18% cost savings vs. RO-RO.
• Requires rigorous post-arrival inspection and wax removal.
• Suitable for destinations with limited container handling.

For Non-Standard or Modified Units:

• Preferred Method: Flat Rack
• Accommodates excavators with extended attachments or non-standard dimensions.
• Enables direct crane loading at remote project ports.
• Highest wax coverage and weatherproofing required.

---

6. Compliance & Documentation

All shipments must comply with:
– IMDG Code (for fuel and hydraulic fluid residues)
– CSS Code (Cargo Securing for RO-RO and Flat Rack)
– China MOC Regulations (Export Inspection Certificate)
– Bill of Lading with corrosion protection certification annex

---

7. Conclusion

For the export of 50g excavators from China, RO-RO shipping provides the optimal balance of cost, speed, and equipment protection for standard configurations. Bulk Cargo remains viable for cost-driven operations with acceptable risk tolerance. Flat Rack is reserved for oversized or customized units requiring structural flexibility. In all cases, industrial-grade wax spraying is non-negotiable to ensure corrosion resistance during transoceanic transit.

SEA LION International recommends integrating wax protection into OEM pre-shipment protocols and verifying compliance via third-party logistics audits.

---

End of Report
SEA LION International – Engineering & Logistics Division
Version: IS-2026-FLEET-EX50G-01